Originally Posted by Kit Fox
Taking the valve cover sounds like quite a hassle, I'm gonna look into having my oil analyzed. I'm in Chicago and it recently started getting ultra cold. When I opened the oil fill in cap the engine note did change abit after a few seconds, not sure if thats related.
Check that the engine crankcase breather is not blocked. The breather may have a small filter or one-way valve wichm might be blocked -allthough unusual, its posible that it can be gunged up. Im not sure which side of the engine the breather is, I ll check it out from the manual and come back.
good lick
steve -uk